US5887616A - Liquid tank - Google Patents

Liquid tank Download PDF

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Publication number
US5887616A
US5887616A US08/664,491 US66449196A US5887616A US 5887616 A US5887616 A US 5887616A US 66449196 A US66449196 A US 66449196A US 5887616 A US5887616 A US 5887616A
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US
United States
Prior art keywords
liquid
supplementary plate
partition film
tank body
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/664,491
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English (en)
Inventor
Kimihiko Ikeda
Kazuyuki Sasaki
Ichiro Kataoka
Kunimitsu Aoki
Shozo Ashizawa
Shinji Narama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
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Filing date
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Assigned to YAZAKI CORPORATION reassignment YAZAKI CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASHIZAWA, SHOZO, IKEDA, KIMIHIKO, NARAMA, SHINJI, AOKI, KUNIMITSU, KATAOKA, ICHIRO, SASAKI, KAZUYUKI
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/06—Fuel tanks characterised by fuel reserve systems
    • B60K15/061—Fuel tanks characterised by fuel reserve systems with level control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/0038—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm using buoyant probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2962—Measuring transit time of reflected waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
    • G01F23/36—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
    • B60K2015/03217—Fuel level sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8342—Liquid level responsive indicator, recorder or alarm

Definitions

  • the present invention relates to a liquid tank which is capable of detecting a liquid level of liquid, such as gasoline.
  • a fuel tank for reserving gasoline for vehicles there is known a fuel tank for reserving gasoline for vehicles.
  • the fuel tank is provided with means for detecting a surface level of the gasoline.
  • the level detecting means comprises a float on the gasoline, an arm for converting a high and low position of the float into a rotational position of the arm, and a potentiometer (sensor) for converting the rotational position of the arm into electric signals.
  • the surface of gasoline often inclines by the vehicle's acceleration, deceleration, rolling or the like. Further, by the vehicle's vibration, the surface of gasoline sometimes undulates and inclines and the gasoline scatters as the case may be.
  • the level of gasoline is usually changeable. Therefore, if an output of the potentiometer is introduced into a not-shown fuel indicator directly, a pointer indicating the residual amounts is so changeable that it is hard for a driver to see. Accordingly, in order to obtain the mean value of the residual gasoline, there has been taken some measures that a responsibility of the fuel indicator is purposely decreased and that a resistance plate for resisting the motion of gasoline is arranged in the fuel tank.
  • the conventional fuel tank has a problem of producing a great error in residual amounts of the gasoline, particularly, on the slanted load.
  • a liquid tank comprising:
  • a flexible partition film arranged in the tank body to divide a space therein into both up and down spaces and positioned so as to cover a surface of the liquid;
  • level detecting means for detecting a position of the flexible partition film.
  • the liquid since the liquid is covered with the partition film, the liquid does not vaporize into the air in the tank body.
  • the flexible partition film serves to restrict the inclination of the liquid surface.
  • the film operates to restrict an occurrence of waves. Consequently, as an upper face of the partition film is stabilized, it is possible to detect the residual amounts of the liquid precisely by detecting a position of the upper face.
  • the surface area of the partition film is not so large as covering the whole liquid in the tank body but small to cover the upper face of liquid, there is less possibility that the film is injured.
  • the partition film does not move while rubbing against an inner face of the tank body, the film is not damaged by the inner face.
  • the arrangement allows the durability of the partition film to be improved. In conclusion, it is possible to detect the residual amounts of liquid more precisely and prevent the vaporization of liquid, providing a liquid tank having a superior durability.
  • the level detecting means is adapted so as to detect a position of a portion of the flexible partition film, the portion being positioned corresponding to a center of the tank body in the horizontal direction.
  • a position of the partition film detected by the level detecting means does not almost vary irrespective of inclinations of the partition film. Therefore, it is possible to detect the residual amounts of liquid precisely in the extreme.
  • the flexible partition film may be provided on a top face thereof with a supplementary plate in the form of a flat plate, while the level detecting means detects a position of a top face of the supplementary plate.
  • the supplementary plate serves to restrict the waves on the surface of the liquid perfectly, it allows to exclude measurement errors in residual amounts of the liquid, which originate in the occurrence of waves.
  • a pair of upper and lower supplementary plates in the form of flat plates may be arranged so as to interpose the partition film therebetween, while the level detecting means may detect a position of the upper supplementary plate.
  • the flexible partition film is made of material having an elastic force to urge the supplementary plate against a surface of the liquid.
  • the level detecting means is adapted so as to detect a position of a portion of the supplementary plate, the portion being positioned corresponding to a center of the tank body in the horizontal direction.
  • the liquid tank further includes a linking mechanism for holding the supplementary plate so that a center portion of the supplementary plate is adjusted to the center of the tank body in the horizontal direction, while carrying the supplementary plate so as to move up and down.
  • the linking mechanism includes a linking member
  • the level detecting means comprises a sensor for detecting a pivot angle of the link member of the linking mechanism.
  • the flexible partition film comprises a textile material made by fabrics and a sealing member fitted on at least one of both surfaces of the textile material to exhibit sealability and flexibility.
  • the sealing member since the tensile strength of the partition film can be improved by the textile material, it is possible to adopt the sealing member exhibiting high sealability, flexibility and high corrosion resistance against the liquid, in spite of its inferior strength. Therefore, the fuel tank can be provided to have the partition film exhibiting superior characteristics in terms of its strength, the sealability, the flexibility and the corrosion resistance.
  • the flexible partition film may comprise a textile material made by fabrics and a sealing member fitted on at least one of both surfaces of the textile material to exhibit sealability and flexibility, while the supplementary plate may be constituted by a thickened part of the sealing member.
  • the sealing member is formed integral with the textile material, the supplementary plate can be also formed simultaneously. That is, it is possible to delete a process of manufacturing the supplementary plate independently and a process of assembling it to the partition film, so that a reduction of the manufacturing cost can be realized.
  • the flexible partition film may comprise a textile material made by fabrics and a sealing member fitted on at least one of both surfaces of the textile material to exhibit sealability and flexibility
  • the supplementary plate may be constituted by a flat part of the flexible partition film where a flat plate is embedded in the sealing member.
  • the sealing member is formed integral with the textile material, for example, by the insert-molding
  • the supplementary plate can be also formed simultaneously. Accordingly, since a process of assembling the supplementary plate to the partition film can be eliminated, it is possible to reduce the manufacturing cost.
  • a liquid tank comprising:
  • a supplementary plate arranged in the tank body so as to be in tight contact with a surface of the liquid
  • a flexible partition film arranged in the tank body so as to cover the remaining surface of the liquid spreading between a periphery of the supplementary plate and an inner wall of the tank body;
  • level detecting means for detecting a position of an upper face of the supplementary plate. In this case, since an area of the partition film is saved, a possibility of injuring the film can be decreased to improve the durability.
  • FIG. 1 is a cross sectional view of the fuel tank in accordance with a first embodiment of the present invention
  • FIG. 2 is a cross sectional view of the fuel tank of FIG. 1, showing the operation
  • FIG. 3 is a cross sectional view of the fuel tank of FIG. 1, showing the operation
  • FIG. 4 is a cross sectional view of flanges of the fuel tank of FIG. 1;
  • FIG. 5 is a plan view of a partition film of the fuel tank of FIG. 1;
  • FIG. 6 is a cross sectional view of the fuel tank of FIG. 1, showing the operation
  • FIG. 7 is a cross sectional view of an essential part of the fuel tank, showing an example of the partition film and a supplementary plate;
  • FIG. 8 is a cross sectional view of the essential part of the fuel tank, showing another example of the partition film and the supplementary plate;
  • FIG. 9 is a cross sectional view of the essential part of the fuel tank, showing a further example of the partition film and the supplementary plate;
  • FIG. 10 is a cross sectional view of the essential part of the fuel tank, further showing an example of the partition film and the supplementary plate;
  • FIG. 11 is a cross sectional view of the fuel tank of FIG. 1, showing the operation
  • FIG. 12 is a cross sectional view of the fuel tank in accordance with a second embodiment of the present invention.
  • FIG. 13 is a cross sectional view of the fuel tank of FIG. 12, showing the operation
  • FIG. 14 is a cross sectional view of the fuel tank of FIG. 12, showing the operation
  • FIG. 15 is a side view of an essential part of a linking mechanism of the fuel tank of FIG. 12;
  • FIG. 16 is a perspective view of the essential part of the linking mechanism
  • FIG. 17 is a cross sectional view of the fuel tank in accordance with a third embodiment of the present invention.
  • FIG. 18 is a cross sectional view of the fuel tank of FIG. 17, showing an operative condition thereof;
  • FIG. 19 is a cross sectional view of the fuel tank of FIG. 17, showing another operative condition
  • FIG. 20 is a cross sectional view of the fuel tank in accordance with a fourth embodiment of the present invention.
  • FIG. 21 is a cross sectional view of the fuel tank of FIG. 20, showing an operative condition thereof;
  • FIG. 22 is a cross sectional view of the fuel tank in accordance with a fifth embodiment of the present invention.
  • FIG. 23 is a cross sectional view of the fuel tank in accordance with a sixth embodiment of the present invention.
  • FIG. 24 is a cross sectional view of the fuel tank in accordance with a seventh embodiment of the present invention.
  • FIG. 25 is a cross sectional view of the fuel tank of FIG. 24, showing an operative condition thereof;
  • FIG. 26 is a cross sectional view of the fuel tank of FIG. 24, showing another operative condition thereof;
  • FIG. 27 is a cross sectional view of the fuel tank in accordance with an eighth embodiment of the present invention.
  • FIG. 28 is a cross sectional view of the fuel tank of FIG. 27, showing the operation
  • FIG. 29 is a cross sectional view of the fuel tank of FIG. 27, showing the operation
  • FIG. 30 is a cross sectional view of the fuel tank of FIG. 27, showing the operation
  • FIG. 31 is a cross sectional view of the fuel tank of FIG. 27, showing the operation
  • FIG. 32 is a cross sectional view of the fuel tank of FIG. 27, showing the operation
  • FIG. 33 is a cross sectional view of the fuel tank in accordance with a ninth embodiment of the present invention.
  • FIG. 34 is a cross sectional view of the fuel tank of FIG. 33, showing an operative condition thereof;
  • FIG. 35 is a cross sectional view of the fuel tank in accordance with a tenth embodiment of the present invention.
  • FIG. 36 is a cross sectional view of the fuel tank of FIG. 35, showing an operative condition thereof.
  • FIGS. 1 to 11 show the first embodiment of the invention.
  • reference numeral 1 designates a tank body which is composed of a lower vessel 11 and an upper vessel 12, while reference numeral 2 denotes level detecting means which comprises a float 3 on the gasoline G, an arm 4 for converting a high and low position of the float 3 into a rotational position of the arm 4, and a potentiometer 5 for converting the rotational position of the arm 4 into electric signals.
  • the lower vessel 11 and the upper vessel 12 are provided with flanges 11a and 12a bent outwardly, respectively. Through not-shown bolts, the flanges 11a, 12a are connected to each other, providing the tank body 1.
  • the upper and lower vessels 11, 12 have a bottom face 11b and a top face 12b both of which are rectangular shaped of substantially identical size, respectively.
  • the lower vessel 11 is composed of the bottom face 11b and four side faces 11c to constitute a trapezoidal container
  • the upper vessel 12 is composed of the bottom face 12b and four side faces 12c to constitute another trapezoidal container having a shape and size identical to the lower vessel 11. Consequently, the tank body 1 is shaped to have a hexagonal cross section.
  • the partition film 13 is constituted by a textile member R1 (FIG. 4) made of nylon fiber, tetron fiber or the like and interposed between polymer materials R2 exhibiting elasticity and superior oil resistance, such as NBR rubber. Therefore, the partition film 13 has a high quality in flexibility and strength. In addition, the film 13 exhibits not only superior liquid-tight and airtight properties but superior oil resistance, corrosion resistance and durability against gasoline G and so on. Thus, owing to the superior flexibility, the partition film 13 can cover a surface of the gasoline G at all times while keeping in contact with it.
  • the partition film 13 is provided on the peripheral part 13a with upper and lower beads R2a, R2a having arc cross sections of the polymer materials R2. While, the flanges 11a and 12a have grooves U formed on opposing faces to holding the beads R2a, R2a in a liquid-tight and airtight manner.
  • the partition film 13 is formed so as to fit respective inner walls of the lower and upper vessels 11, 12, substantially.
  • the peripheral part 13a is shaped in form of flange so as to be interposed between the flanges 11a and 12a.
  • a supplementary plate 17 Fixed on a top face of the partition film 13 at the center thereof is a supplementary plate 17 which has enough rigidity to maintain a level surface of the gasoline G irrespective of its variations and which has a weight so as not to sink under the gasoline G while closing to the specific gravity of the gasoline G. That is, while oppressing the surface of the gasoline G, the supplementary plate 17 serves to prevent an occurrence of variations on the surface, such as waves.
  • the supplementary plate 17 is formed to be somewhat smaller than the bottom faces 11b and 12b.
  • reference numeral 15 denotes a pipe for charging the gasoline G and 16 a cap for to closing an inlet of the pipe 15.
  • the gasoline G supplied through the pipe 15 has always an upper vaporizing in the tank body 1. Simultaneously, residual amounts surface covered with the partition film 13 without contact with air in the tank body 1. Consequently, it is possible to prevent the gasoline G from being measured usually since the level detecting means 2 detects a position of the upper face of the supplementary plate 17.
  • both of the partition film 13 and the supplementary plate 17 serve to restrict inclination of the top face of the gasoline G. Therefore, in comparison with the case without the partition film 13 and the supplementary plate 17, it is possible to reduce the inclination of the top surface of the gasoline G, whereby the error of residual amounts of the gasoline G can be decreased.
  • the partition film 13 and the supplementary plate 17 operate to oppress the top face of the gasoline G, so that it is possible to prevent the occurrence of waves on the surface of the gasoline G. That is, an error due to waves in residual amounts of gasoline can be prevented.
  • the surface area of the partition film 13 is smaller than that of the conventional film in the form of a bag, the probability is small that the partition film 13 will be damaged. Moreover, as the partition wall 13 does not move while rubbing against the inner face of the tank body 1 any more, the possibility that the partition film 13 is damaged can be reduced remarkably.
  • the supplementary plate 17 also serves to restrict such a lowering in the level of the gasoline G.
  • the above-mentioned supplementary plate 17 of the first embodiment is secured on the partition film 13 by means of adhesive agent, as shown in FIG. 7.
  • adhesive agent as shown in FIG. 7.
  • the above-mentioned supplementary plate 17 may be constituted by a pair of flat plates putting the partition film 13 therebetween, as shown in FIG. 8.
  • tacks 17a as fastening means for the upper and lower plates 17, 17, it is also possible to fix the plates 17, 17 to the partition film 13 certainly.
  • the supplementary plate 17 may be replaced with a thickened part of the polymer material (sealing member) R2.
  • the sealing member R2 when rubber material corresponding to NBR is employed as the sealing member R2, an increase the thickness allows for provision of the supplementary plate 17 which shows a sufficient rigidity and which is capable of oppressing the surface of the gasoline G with a great force.
  • the supplementary plate 17 may be composed of a part of partition film 13 where a flat plate 17b is embedded in the sealing member R2.
  • the flat plate 17a is embedded in the sealing member R2
  • part of the partition film 13 can be changed into the supplementary plate 17 having sufficient rigidity.
  • the insert molding as an example, it is possible to form the supplementary plate 17 at the same time of integrating the sealing member R2 with the textile member R1. Therefore, since the process to assembling the plate 17 into the partition film 13 can be deleted, it is possible to reduce the manufacturing cost.
  • FIGS. 12 to 16 The second embodiment of the invention will be described with reference to FIGS. 12 to 16. Note, in this embodiment, elements similar to those in the first embodiment of FIGS. 1 to 11 are indicated by the same reference numerals, respectively, and their explanations will be simplified. A difference between the second embodiment and the first embodiment resides in that a center part of the supplementary plate 17 is supported by a linking mechanism 30.
  • the linking mechanism 30 includes a pivot 31 arranged on the inner wall of the lower vessel 11, a sliding pivot 32 arranged on an under face of the supplementary plate 32 and a linking member 33 having one end connected to the pivot 31 and the other end connected to the sliding pivot 32.
  • the linking mechanism 30 serves to maintain a position of the supplementary plate 17 so as to adjust a center portion of the supplementary plate 17 to a center of the tank body 1 in the horizontal direction and to carry the supplementary plate 17 so as to move up and down.
  • the sliding pivot 32 includes brackets 34 projecting from the lower face of the supplementary plate 17 through the partition film 13, and a pin 35 for pivotably carrying the other end of the linking member 33.
  • the parallel brackets 34 are arranged so as to interpose the other end of the linking member 33 therebetween, provided with elongated holes 34a for carrying the pin 35 so as to rotate and slide therein.
  • the pin 35 is inserted into a through hole 33a formed on the other end of the linking member 33.
  • the linking member 33 has a substantial L-shaped cross section so that when the supplementary plate 17 reaches the lowermost level, the member 33 follows to the side face 11c and the bottom face 11b of the lower vessel 11. While, a recess lid is formed on the bottom face 11b to accommodate the linking member 33 therein.
  • the linking member 33 rotates about the pivot 31 as a fulcrum, as shown in FIGS. 12 to 14 During such rotation, since the other end of the linking member 33 moves horizontally with respect to the tank body 1, the pin 35 of FIG. 15 moves along the elongated holes 34a. However, because of small in pivot angle of the linking member 33, the other end of the member 33 moves in the upward and downward directions while running along a center line of the tank body 1 in the horizontal direction, substantially. In addition, a length of each elongated hole 34 is remarkably short.
  • the supplementary plate 17 moves up and down. Therefore, since the plate 17 does not move in the horizontal direction as shown in FIG. 11, it is possible to prevent an increase in the error of the residual amounts of the gasoline G.
  • the third embodiment of the invention will be described with reference to FIGS. 17 to 19. Note, in this embodiment, elements similar to those in the second embodiment of FIGS. 12 to 16 are indicated by the same reference numerals, respectively, and their explanations will be simplified.
  • a difference between the third embodiment and the second embodiment resides in that the linking mechanism 30 is arranged over the supplementary plate 17 and a potentiometer (sensor) 5 detects a pivot angle of the linking member 33.
  • the linking member 33 has a substantial L-shaped cross section so as to follow to the side face 12c and the upper face 12b of the upper vessel 11. Similarly, a recess 12d is formed on the upper face 12b to accommodate the linking member 33 therein.
  • the potentiometer 5 is arranged on the side face 12c of the upper vessel 12 to detect the pivot angle of the linking member 33. In the embodiment, both of the potentiometer 5 and the linking member 30 constitute level detecting means 2 of the invention.
  • the supplementary plate 17 moves up and down in response to the amounts of the gasoline G, while the linking member 33 rotates about the pivot 31 as a fulcrum.
  • the supplementary plate 17 is usually maintained at the center of the tank body 1 in the horizontal direction.
  • the position of the plate 17 in the vertical direction is detected by the potentiometer 5 through the pivot angle of the linking member 33.
  • the linking member 33 usually carries the center portion of the supplementary plate 17, the pivot angle of the linking member 33 almost never changes even if the plate 17 is slanted. Accordingly, it is possible to detect the residual amounts of the gasoline G more precisely.
  • the linking mechanism 30 as an element of the level detecting member 2.
  • the fourth embodiment of the invention will be described with reference to FIGS. 20 and 21. Note, in this embodiment, elements similar to those in the second embodiment of FIGS. 1 to 11 are indicated by the same reference numerals, respectively, and their explanation will be simplified. Differences between the fourth embodiment and the first embodiment reside in that the flanges 11a, 12a are positioned underside of the center and that the partition film 13 is constructed to have an elastic force.
  • the flanges 11a, 12a are positioned at the level of about one third of a height of the tank body 1.
  • the bottom face 11b is formed of such a size substantially equal to that of the upper face 12b.
  • the partition film 13 is arranged in the tank body 1 so as to cover the surface of the gasoline G spreading between a periphery of the supplementary plate 17 and the inner face of the tank body 1.
  • the partition film 13 in the form of bellows urges the plate 17 on the surface of the gasoline G with the compressive elastic force.
  • the partition film 13 urges the plate 17 on the surface of the gasoline G with the tensile elastic force.
  • the periphery 13a of the partition film 13 is secured between the flanges 11a, 12a, as shown in FIG. 4.
  • FIG. 22 We now describe the fifth embodiment of the invention with reference to FIG. 22. Note, also in this embodiment, elements similar to those in the fourth embodiment of FIGS. 20 and 21 are indicated by the same reference numerals, respectively, and their explanations will be simplified.
  • a difference between the fifth embodiment and the fourth embodiment resides in that the partition film 13 connects a periphery of the bottom face 11a to the periphery of the supplementary plate 17.
  • the partition film 13 is constructed so as to usually depress the plate 17 on the surface of the gasoline G with the tensile elastic force. Therefore, the fuel tank of the embodiment operates in the same way as the fuel tank in the fourth embodiment.
  • FIG. 23 elements similar to those in the fourth embodiment of FIGS. 20 and 21 are indicated by the same reference numerals, respectively, and their explanations will be simplified. Differences between the sixth embodiment and the fourth embodiment reside in that the flanges 11a, 12a are positioned on the upper side of the center of the tank body 1 and that the partition film 13 is fixed to the tank body 1 through the intermediary of a resin stay 40.
  • the flanges 11a, 12a are positioned at the level of about three fourths of the whole height of the tank body 1.
  • the bottom face 11b is formed of such a size substantially equal to that of the upper face 12b.
  • the resin stay 40 is formed to have a substantial L-shaped cross section, having its periphery 40a interposed between the flanges 11a, 12a.
  • the resin stay 40 has a lower end 40b which is arranged close to the periphery of the bottom face 11b and to which the partition film 13 is secured.
  • the supplementary plate 17 is urged against the surface of the gasoline G by the tensile force of the partition film 13. Therefore, the operations and effects are similar to those in the fourth and fifth embodiments. Further, owing to a provision of the resin stay 40, the flanges 11a, 12a can be arranged on an upper side of the tank body 1. Thus, it is possible to prevent the gasoline G from leaking out of the tank body 1 through the flanges 11a, 12a as a join.
  • FIGS. 24 to 26 elements similar to those in the first embodiment of FIGS. 1 to 11 are indicated by the same reference numerals, respectively, and their explanations will be simplified.
  • a difference between the seventh embodiment and the first embodiment is the only fact that the tank body 1 has a rectangular cross section.
  • the lower vessel 11 has the side face 11c standing perpendicular to the bottom face 11b while the upper vessel 12 has the side face 12c extending perpendicular to the upper face 12b.
  • the operations and effects are similar to those of the first embodiment.
  • FIGS. 27 to 32 we describe the eighth embodiment of the invention. It is noted that in this embodiment, elements similar to those in the seventh embodiment of FIGS. 24 to 26 are indicated by the same reference numerals, respectively, and their explanations will be eliminated.
  • the eighth embodiment differs from the seventh embodiment in respects that the supplementary plate 17 is eliminated, while an ultrasonic level sensor 14 is replaced with the level detecting means 2.
  • the surface of the gasoline G is covered with the partition film 13 only.
  • the ultrasonic level sensor 14 is mounted on the upper face 12a at the center.
  • the ultrasonic level sensor 14 In operation, the ultrasonic level sensor 14 generates ultrasonic waves right under and then receives the waves reflected by the partition film 13 to detect a position of the surface. That is, the ultrasonic level sensor 14 detects the position of surface of the partition film 13, the surface corresponding to a center of the tank body 1 in the horizontal direction.
  • the sensor 14 is connected to a fuel indicator which is not shown in the figure, through terminals 14a, 14b.
  • the residual amounts of the gasoline G shown in FIGS. 27 to 30 are detected by the ultrasonic level sensor 14.
  • the partition film 13 is slanted following to the slanted surface of the gasoline G.
  • the sensor 14 is positioned at the center of the tank body 1 in the horizontal direction, there is hardly any difference between a measured value before slanting and that after slanting.
  • the partition film 13 is inclined, it is possible to detect the residual amounts of the gasoline G precisely.
  • FIG. 33 and FIG. 34 we describe the ninth embodiment of the invention. It is noted that in this embodiment, elements similar to those in the eighth embodiment of FIGS. 27 to 32 are indicated by the same reference numerals, respectively, and their explanations will be eliminated.
  • the ninth embodiment differs from the eighth embodiment in a respect that the supplementary plate 17 is mounted on the partition film 13.
  • the tenth embodiment of the invention will now be described with reference to FIG. 35 and FIG. 36.
  • elements similar to those in the first embodiment of FIGS. 33 and 34 are indicated by the same reference numerals, respectively, and their explanations will be simplified.
  • a difference between the tenth embodiment and the ninth embodiment resides in that the level detecting means 20 is replaced with the ultrasonic level sensor 13.
  • the level detecting means 20 includes a flexible cable 21, a pulley 22 for winding the cable 21, a drive shaft 23 for rotating the pulley 22, a coil spring 24 for exerting rotating force on the shaft 23, and a potentiometer 25 for converting a rotational position of the shaft 23 into an electrical signal.
  • the cable 21 Hanging from a through hole 12c formed at the center of the upper face 12b of the upper vessel 12 downwardly, the cable 21 has one end fixed to the supplementary plate 17. Thus, the end of the cable 21 is connected to the upper part of the supplementary plate 17, which corresponds to the center of the tank body 1 in the horizontal direction. While, the other end of the cable 21 is wound about the pulley 22.
  • the potentiometer 25 includes a card 25a constituted by a resistance line, and a brush 25b abutting on the card 25a in a position varying corresponding to the rotational position of the drive shaft 23. That is, the potentiometer 25 serves to convert the rotational position of the drive shaft 23 into a voltage signal and generates it, having terminals 25c, 25d connected to the not-shown fuel indicator.
  • the cable 21 is wound in the pulley 22 or wound out from the pulley 22.
  • the up and down position of the plate 17 can be detected by the potentiometer 25 through the cable 21 and the pulley 22.
  • the cable 21 is fastened to the upper face of the plate 21 corresponding to the center of the tank body 1 in the horizontal direction, even if the plate 17 is brought into slanting condition as shown in FIG. 36, there would be no changes in position for detecting the supplementary plate 17. That is, in even a case that the partition film 13 inclines, it is possible to exclude errors in detecting the residual amounts of the gasoline G.
  • the fuel tank of the invention is capable of measuring the surface of the gasoline G by using the above-mentioned level detecting means 2, the combination of the potentiometer 5 and the linking mechanism 30, the ultrasonic level sensor 14 and the level detecting means 20.
  • the potentiometer 5 of the embodiment it may be applicable of any one of the present detectors (ex. Hall-element and magnet, lead-switch and magnet, photo sensor etc.) as a method of detecting the rotating object.
  • pulse counts corresponding to "empty” and “full-charge” of the gasoline G are previously stored in storing means, such as non-volatile memory, so that the actual residual amounts can be calculated by the present pulse counts detected actually.
  • the invention may be applied to the fuel tank in a construction machine, such as a powered shovel etc. or another machine. Further, the invention is also applicable to a tank for reserving the other liquid, of course.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Level Indicators Using A Float (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
US08/664,491 1995-06-23 1996-06-17 Liquid tank Expired - Fee Related US5887616A (en)

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JP15802295A JP3178991B2 (ja) 1995-06-23 1995-06-23 液体タンク
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US6269509B1 (en) * 1998-12-30 2001-08-07 Audie L. Mays Automated apparatus for cleaning golf balls
US6272911B1 (en) * 1999-12-23 2001-08-14 Daimlerchrysler Corporation Vehicle sensing system and method
US6389893B1 (en) 1998-08-19 2002-05-21 Toyota Jidosha Kabushiki Kaisha Fuel amount detector
US20030221965A1 (en) * 2002-05-31 2003-12-04 Taisaku Seino Capillary electrophoresis device
US20090095366A1 (en) * 2007-10-15 2009-04-16 Gray Jr Charles L Hydraulic pressure accumulator
US20110192382A1 (en) * 2010-02-05 2011-08-11 Toyota Jidosha Kabushiki Kaisha Fuel tank and fuel vapor treatment device equipped with the fuel tank
CN103175586A (zh) * 2013-02-19 2013-06-26 俞忠兵 道路积水深度传感器
CN104918814A (zh) * 2013-01-15 2015-09-16 丰田自动车株式会社 燃料罐结构
US9176507B2 (en) 2010-10-21 2015-11-03 Spencer Kim Haws Hot water recovery
US9316403B2 (en) 2010-10-21 2016-04-19 Spencer Kim Haws Hot water recovery
US9353955B1 (en) 2012-06-08 2016-05-31 Spencer Kim Haws Hot water recovery apparatus
CN105835690A (zh) * 2016-05-18 2016-08-10 碧海舟（北京）节能环保装备有限公司 VOCs零排汽车油箱
CN105857988A (zh) * 2016-05-18 2016-08-17 碧海舟（北京）节能环保装备有限公司 有机挥发物VOCs零排放储液罐
US9513641B1 (en) 2010-10-21 2016-12-06 Spencer Kim Haws Hot water recovery
CN106185098A (zh) * 2016-08-31 2016-12-07 太仓市锦澄混凝土有限公司 一种带溢满预警构件的混凝土料罐
US20160368370A1 (en) * 2015-06-16 2016-12-22 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
CN106256587A (zh) * 2015-06-16 2016-12-28 丰田自动车株式会社 燃料罐结构
US20170030310A1 (en) * 2015-07-27 2017-02-02 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
US10295197B2 (en) 2014-06-30 2019-05-21 Spencer Kim Haws Hot water energy conservation
US10527478B2 (en) * 2017-07-12 2020-01-07 Per Ola Hogdahl Tank fluid level measuring device
US20200406745A1 (en) * 2018-02-28 2020-12-31 Kautex Textron Gmbh & Co. Kg Motor vehicle tank having volume element

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JP3570232B2 (ja) * 1998-08-21 2004-09-29 トヨタ自動車株式会社 蒸発燃料処理装置
JP3361459B2 (ja) 1998-08-21 2003-01-07 トヨタ自動車株式会社 燃料タンク及びこれを搭載した車両
DE19901814B4 (de) * 1999-01-19 2009-09-10 Volkswagen Ag Niveauschalter
DE19938427A1 (de) * 1999-08-13 2001-02-15 Audi Ag Kraftstoffbehälter
KR100535594B1 (ko) * 2003-10-16 2005-12-08 현대자동차주식회사 연료 탱크의 구조
DE102010005540A1 (de) * 2010-01-23 2011-07-28 hansaconsult Ingenieurgesellschaft mbH, 21465 Vorrichtung und Verfahren zur Füllstandsmessung in einem Tank mit flexiblen Wänden
JP5736918B2 (ja) * 2011-04-06 2015-06-17 トヨタ自動車株式会社 燃料タンク構造
DE102015206743A1 (de) 2015-04-15 2016-10-20 Volkswagen Aktiengesellschaft System zur Erkennung eines Füllstands eines Kraftstoffbehälters
CN113844255B (zh) * 2021-10-12 2023-08-01 安徽江淮汽车集团股份有限公司 一种油箱的防浪结构

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6389893B1 (en) 1998-08-19 2002-05-21 Toyota Jidosha Kabushiki Kaisha Fuel amount detector
US6269509B1 (en) * 1998-12-30 2001-08-07 Audie L. Mays Automated apparatus for cleaning golf balls
US6272911B1 (en) * 1999-12-23 2001-08-14 Daimlerchrysler Corporation Vehicle sensing system and method
US20030221965A1 (en) * 2002-05-31 2003-12-04 Taisaku Seino Capillary electrophoresis device
US7217352B2 (en) * 2002-05-31 2007-05-15 Hitachi High-Technologies Corporation Capillary electrophoresis device
US7527074B1 (en) * 2007-10-15 2009-05-05 The United States of America, as represented by the Administrator of the United States Enviromental Protection Agency Hydraulic pressure accumulator
US20090095366A1 (en) * 2007-10-15 2009-04-16 Gray Jr Charles L Hydraulic pressure accumulator
US20110192382A1 (en) * 2010-02-05 2011-08-11 Toyota Jidosha Kabushiki Kaisha Fuel tank and fuel vapor treatment device equipped with the fuel tank
US8671916B2 (en) * 2010-02-05 2014-03-18 Toyota Jidosha Kabushiki Kaisha Fuel tank and fuel vapor treatment device equipped with the fuel tank
US9316403B2 (en) 2010-10-21 2016-04-19 Spencer Kim Haws Hot water recovery
US10436455B2 (en) 2010-10-21 2019-10-08 Spencer Kim Haws Hot water recovery
US9513641B1 (en) 2010-10-21 2016-12-06 Spencer Kim Haws Hot water recovery
US9176507B2 (en) 2010-10-21 2015-11-03 Spencer Kim Haws Hot water recovery
US9353955B1 (en) 2012-06-08 2016-05-31 Spencer Kim Haws Hot water recovery apparatus
CN104918814A (zh) * 2013-01-15 2015-09-16 丰田自动车株式会社 燃料罐结构
US20150343899A1 (en) * 2013-01-15 2015-12-03 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
US9902260B2 (en) * 2013-01-15 2018-02-27 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
CN103175586A (zh) * 2013-02-19 2013-06-26 俞忠兵 道路积水深度传感器
US10295197B2 (en) 2014-06-30 2019-05-21 Spencer Kim Haws Hot water energy conservation
US10106029B2 (en) 2015-06-16 2018-10-23 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
CN106256587B (zh) * 2015-06-16 2019-06-25 丰田自动车株式会社 燃料罐结构
US20160368370A1 (en) * 2015-06-16 2016-12-22 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
CN106256587A (zh) * 2015-06-16 2016-12-28 丰田自动车株式会社 燃料罐结构
US10302053B2 (en) * 2015-07-27 2019-05-28 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
US20170030310A1 (en) * 2015-07-27 2017-02-02 Toyota Jidosha Kabushiki Kaisha Fuel tank structure
CN105857988A (zh) * 2016-05-18 2016-08-17 碧海舟（北京）节能环保装备有限公司 有机挥发物VOCs零排放储液罐
CN105835690A (zh) * 2016-05-18 2016-08-10 碧海舟（北京）节能环保装备有限公司 VOCs零排汽车油箱
CN106185098B (zh) * 2016-08-31 2019-01-01 太仓市锦澄混凝土有限公司 一种带溢满预警构件的混凝土料罐
CN106185098A (zh) * 2016-08-31 2016-12-07 太仓市锦澄混凝土有限公司 一种带溢满预警构件的混凝土料罐
US10527478B2 (en) * 2017-07-12 2020-01-07 Per Ola Hogdahl Tank fluid level measuring device
US20200406745A1 (en) * 2018-02-28 2020-12-31 Kautex Textron Gmbh & Co. Kg Motor vehicle tank having volume element

Also Published As

Publication number Publication date
JP3178991B2 (ja) 2001-06-25
JPH095140A (ja) 1997-01-10
DE19624911C2 (de) 1998-08-27
DE19624911A1 (de) 1997-01-02

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